Micro vane and arrow with micro vane

Abstract

A vane, that can be mounted to a projectile to provide stability of flight, without substantially degrading speed due to added weight and/or causing clearance concerns. The vane is approximately one inch long and 0.4 inches high with a front-edge and a back-edge that meet at a point. The back-edge arcs down towards the base of the vane while the front edge degrades in a substantially linear fashion to the base of the vane.

1. A vane for mounting to a projectile, the vane comprising:
 a base for mounting on the surface of the projectile; and 
 a vane fin including a contour defined by a bottom-edge, a rear-edge and a front-edge, and having a height H of substantially 0.400 inches and a length L of substantially 1 inch, wherein:
 the bottom-edge, comprising a front point and a back point, is substantially linear between its front and back points and is adjoined to the base; 
 the rear-edge, comprising an upper point and a lower point, arcs concave to the bottom-edge in an upward direction from its lower point to its upper point, the lower point of the rear-edge corresponding with the back point of the bottom-edge; and 
 the front-edge, comprising an upper point and a lower point, degrades in a linear fashion from its upper point to its lower point, the upper point of the front-edge corresponding with the upper point of the back-edge and the lower point of the front-edge corresponding with the front point of the bottom-edge. 
 
 
     
     
       2. The vane of  claim 1 , wherein the height H of the vane is within 2% of 0.400 inches. 
     
     
       3. The vane of  claim 1 , wherein the length L of the vane is within 2% of 1 inch. 
     
     
       4. The vane of  claim 1 , wherein the height H of the vane is within 2% of 0.400 and the length L of the vane is within 2% of 1 inch. 
     
     
       5. The vane of  claim 1 , wherein the radius of the arc of the rear-edge is approximately 0.818 inches. 
     
     
       6. The vane of  claim 1 , wherein the front-edge degrades towards the bottom-edge at an angle Ø 1  of approximately 26°±1°. 
     
     
       7. A projectile, comprising:
 a shaft component; and 
 a plurality of vanes, wherein each of the plurality of vanes comprises:
 a base for mounting on the surface of the shaft component; and 
 a vane fin including a contour defined by a bottom-edge, a rear-edge and a front-edge, and having a height H of substantially 0.400 inches and a length L of substantially 1 inch, wherein:
 the bottom-edge, comprising a front point and a back point, is substantially linear between its front and back points and is adjoined to the base; 
 the rear-edge, comprising an upper point and a lower point, arcs concave to the bottom-edge in an upward direction from its lower point to its upper point, the lower point of the rear-edge corresponding with the back point of the bottom-edge; and 
 the front-edge, comprising an upper point and a lower point, degrades in a linear fashion from its upper point to its lower point, the upper point of the front-edge corresponding with the upper point of the back-edge, and the lower point of the front-edge corresponding with the front point of the bottom-edge. 
 
 
 
     
     
       8. The projectile of  claim 7 , wherein the height H of a vane is within 2% of 0.400 and the length L of a vane is within 2% of 1 inch. 
     
     
       9. The projectile of  claim 7 , wherein the radius of the arc of the rear-edge of a vane is approximately 0.818 inches. 
     
     
       10. The projectile of  claim 7 , wherein the front-edge of a vane degrades towards the front point of its bottom-edge in a linear fashion at an angle Ø 1  of approximately 26°±1°to a point P 1  and then arcs concave to the bottom-edge downwardly from point P 1  to the front point of the bottom-edge. 
     
     
       11. The projectile of  claim 10 , wherein the vane's arc from point P 1  to the front point of the bottom edge has a radius of 0.125±0.005 inches. 
     
     
       12. The projectile of  claim 7 , wherein the height H of the vane is within 2% of 0.400 inches. 
     
     
       13. The projectile of  claim 7 , wherein the length L of the vane is within 2% of 1 inch.